Beater.



H.J. MEADER.

BEATER.

APPLICATION FILED APR. 10' 1912,

gng g g Patented Apr. 6, 1915.

INVENTOR I BY ;?k ile.

ATTORNEY for the circulation of the material.

UNITED STATEg PATENT @FFTCE.

HENRY J. MEADER, 0F UTICA, NEW YORK.

HEATER.

flpplication filed April 10, 1912. Serial No. 689,747.

To all whom it mag 1101200172.

Be it known that I. HENRY J. MEADER, a citizen of the United States, residing at Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Beaters, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to an improved beater, and I declare that the following is a full, clear, concise and exact description thereof, sufiicient to enable one skilled in the art to make and use the same, reference being had to the accompanying drawings in which like referencecharacters refer to like parts throughout.

The subject of the invention is a machine constructed to macerate and reduce to liquid form material suitable for making paper, water being supplied to the mass during the process of reduction. In such machines a beater-roll is provided which is revolved, the lower face being close to-the bed-plate. An oblong tank is provided which has a partition on its central longitudinal line but which does not extend to either end of the tank. The tank is thus a course or rug beater-roll is revolubly supported between one interior wall of the tank and the oppositely-facing wall of. the partition. A; bedplate is set at the bottom of the tank below the beater-roll and close enough to it to effect reduction of the paper material as it passes between the two. The revolution of the beater-roll causes the circulation of the material in the tank. A back-fall is built in the bottom of the tank on the discharge side of the beater-roll. It consists of a structure rising above the bottom of the tank and extending transverse the tank. Its top is below the surface of the circulating mass. One face is curved substantially as the circumference of the roll from which it is samewliat spaced. The other face is a de cline from the top of the back-fall to the bottom of the tank. Without the use of the baclofall the circulation of the material could be caused only by the pushing effect of the revolving beater-roll, on the one side, and its drawing effect on the other. By using a back-fall the lifting eiiiciency of the revolving roll assists in raising the material to the top of the fall whence the force of gravity aids the circulation as the mater l I Specification of Letters Patent.

Patented Apr. 6, 1915.

passes down the decline. Hence the force of gravity becomes a large factor in causing ready circulation while little, if any, more work is put upon the beater-roll which necessarily, in an case, and by its mere revolution, does some work in lifting the material. lines the material within the field of such work. The fall also has a large effect in causing thorough mixing of the mass.

My invention contemplates the use of means on the opposite side of the beater roll to make the feed of material, both when furnished to the machine and throughout the operation more rapid'and easy, to reduce the clogging of material, to quicken the circulation and to increase the mixing of the mass. Inthe drawings Figure 1 is a side View of a beater with one of its sides broken out to give a view of the beater roll, the backfall and my improved added construction. Fig. 2 is a top view of part of the beater.

Referring to the drawings in detail, l-represents the bottom of the tank, 2, 2 its sidewalls and 3 the partition. 5 is the beaten roll mounted on shaft 6, suitably supported as on the partition and one of the side-walls, as in housings 7 and 8. Power is, of course, applied to revolve the roller, but need not be shown or described.

10 is the bed-plate.

The back-fall shown at 11, having the curved face 12 and the sloping face 13.

The curved face of the fall con- At 15 is shown a construction built up at a less steep grade to a point on the bottom. The plain sloping part 17 of the frontfall or feed-fall descends from the top or ridge 16, which is at a considerable distance from the beater roll, to a. point beneath the beater roll at the bottom of the tank, the lower end of said sloping part being at a considerable distance from the bed plate l0, thus leaving a level space at the bottom of the tank, between said lower end of said may be termed a feed-falh'with'an apex or sloping part and saaibed plate, thereby providing a wide month between the beater roll and feed-fall for the -entrance ofthe'material to be reduced. As I have said, the construction may be built in the construction of the tank or it may be put in a tank,

without rebuilding or altering the same, and

be secured in position by any suitable means.

The surface 18 is broken" by .atrough. 20,

transverse the tank and-the line 9f flow, which serves as a trap for forei'gn matter, such as nails or metal scraps,.'which mightv do injury if not separated One feature of my invention isthe plac-. ing of the construction shown, and which ridge, shown as angular,=in :front of the beater-roll and whose height is substantiallyone-half the radius of the roll; Heavier material which has naturally settled in the miX-- ture is raised toward the top 'by passing up the easy incline 18.

charges against that ahead of it which lies in the bottom of the-tank and the constant pressure on the portion at the bottom of the tank presses the material up the incline 18. Another-feature is that asthe descent from the top of the feed-fall to the roll is more abrupt,- the movement of the material is quickened and the heavier and ungroundportions are forced directlylbetween the roll and the bed-plate. ment of the material also lessens the tendency to clog. Such movement is not confined to the heavier portions'but the-entire mass which passesdown the face 17 is af fected by the force of gravity, because it is I 1' all crowded within the space between the "40 top of the fall and the line which marks the surface of the mass above the top of the fall and is suddenly released into a larger space with a-downward sloping bottom as soon as front of the feed-fall.

' Copies of this patent may be obtained for The material which presses down the decline of the back fall dis-.-

This quickened move-- In furnishing thebeater the.

if su ch pressure were not used. In machines whichare not supplied with my device almost constant use of long paddles is necessary to push such. material against the roll- This requires a great deal of'time and help and ,[I have found by actual use of my device on several machines that the time required to furnish a beateris reduced to less than a' third and the help reduced in about the same proportion. Furthermore, by the quicker movement of'the material the same result of the rinding is accomplished in a less time so t at I have more than trebled -the production ofeach machine by use 'of my improvement.

'I am aware that in for some such general kinds of work" a curved plate has been put adjacent the roller and infront of it, much as the curved surface of the-back-fall. But such devices are ineflective for the purposes I have named. A

machines constructed.

distinguishing feature ofmy device is that a the slope to {the roll starts from a point at some distance. This provides ample opening for bulky and united masses of material especially to enter the space between the fall and thebeater, and once in that space'they are forced to the point where the face of the fall and the surface of the roller converge.

On the other hand, in such constructions as I have referred to such a result is impossible.

Having de cribed my invention, what I" claim as new and desire to secure by Letters Patent, is: I

'In a pulp beater, the combination with a tank, a beater roll and a bed plate cooperating with said beater roll, of a front-fall or feed-fall having a plain sloping part which descends from a top or ridge, considerably removed from said beater roll, to a point beneath the beater roll at the bottom of the tank, the lower end of said sloping part being at a considerable distance from said'bed plate, leaving a level space, at the bottom of the tank, between the said lower end of said sloping part and said b'ed plate; thereby providing a wide month between the said beater roll and the said feed-fall for the en ,tranc'e of the material to be reduced.

In testimony whereof I hereunto afiix my signature in'the presence of two witnesses. HENRY J. MEADER.

Vl-Htnesses: i

HENRY M. Love, H. N. BURRILL.

five cents each, by addressing the Commissioner of Iatents,

Washington, D. G.- 

